Wu, N.-L.N.-L.WuLee, M.-S.M.-S.LeeNAE-LIH WU2020-01-062020-01-062004https://scholars.lib.ntu.edu.tw/handle/123456789/445669Cu particles have been deposited on TiO2 by incipient-wetness impregnation followed by low-temperature (400°C) calcination/reduction, and the metallization process leads to significant enhancement in photocatalytic activity of TiO2 for H2 production from aqueous methanol solution. The activity exhibits up to 10-fold enhancement at the optimum loading of ∼ 1.2 wt% Cu. Spectroscopic studies indicated that the Cu particles were oxidized during reaction to have a valence lower those of thermally oxidized particles, which showed inferior activities. Dissolution of Cu ion in TiO 2 lattice, in contrast, resulted in reduction in photocatalytic activity. © 2004 International Association for Hydrogen Energy. Published by Elsevier Ltd. All rights reserved.Cu; Hydrogen; Methanol; Phototcatalysis; TiO2[SDGs]SDG7Copper; Corrosion; Hydrogen; Methanol; Oxidation; Photocatalysis; Electronic energy band structures; Hydrogen production; Photocatalytic activity; Titanium dioxidejournal article10.1016/j.ijhydene.2004.02.0132-s2.0-9344271572https://www.scopus.com/inward/record.uri?eid=2-s2.0-9344271572&doi=10.1016%2fj.ijhydene.2004.02.013&partnerID=40&md5=52b04fd67f42e752be3903e948e6bf2f